Air-heating apparatus



K O I R m A P K R TL K m u (No Model.)

AIR HEATING APPARATUS.

No. 430,657. Patented June 2-4, 1890.

51M) amboz (No Model.) I 3 Sheets-Sheet 2. J. A. KIRKPATRICK.

AIR HEATING APPARATUS.

No. 430,657. Patented June 24, 1890.

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(No ModeL) J. A. KIRKPATRICK.

AIR HEATING APPARATUS.

' Patented June 24 lmitwzooao UNITED STATES PATENT OFFICE.

JOHN A. KIRKPATRICK, OF ANTHONY, KANSAS.

AIR-HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 430,657, dated June 24, 1890. Application filed December 17, 1889- Serial No. 334,096. (No model.)

To aZZ whom it may concern:

Be it known that 1, JOHN A. KIRKPATRICK, a citizen of the United States, residing at Anthony, in the county of Harper and State of Kansas, have invented a new and useful Air- Heating Apparatus, of which the following is a specification.

This invention relates to air-heating apparatus, and it has for its object to construct a hot-air stove or furnace which shall possess superior advantages in point of simplicity, durability, and general efficiency, which may be readily adapted to burn different kinds of fuel, in which provision shall be made for the circulation of the largest possible quantities of air which may be taken either from the external air or from the room or rooms or apartments which areto be heated, which may in turn be supplied with large quantities of hot and pure air, which shall be provided with air-heating surfaces of proportionately large extent, and in addition thereto with a considerable radiatingsurface, which shall be provided with a simple and efficient cleaning or soot-removing mechanism, and which shall be simple in construction, economical in the consumption of fuel, and easily managed.

With these ends in view the invention consists in the improved construction, arrangement, and combination of parts which will be hereinafter fully described, and particularly pointed out in the claims.

111 the drawings hereto annexed, Figure 1 is a front perspective view of my improved air-heating apparatus, with parts of the same broken away for the purpose of exposing the interior construction more clearly. Fig. 2 is and convenient shape and design, and which is subdivided by suitable partitions into three separate and independent compartments, namely, an air-chamber 2, occupying the central and rear portion of the base, a smoke chamber or passage 3, occupying the sides and the lower front portion, and an ashpit 4t. occupying the upper front portion of the base. It will be understood that the shape and the relative arrangement of the said subdivisions or compartments of the base may be somewhat varied according to the shape and general structure of the base, although the construction and arrangement illustrated in the drawings hereto annexed are deemed very convenient and probably preferable.

The ash-pit is provided at its front end with a door 5, having a draft-slide 6, of ordinary construction. The ash-pit is covered by the top plate 7, which supports the firepot. 8. A top plate 9, which covers the airchamber 2, is provided with a forwardly-extending portion, annular in shape and. resting upon the upper edge of the firepot. The top plate 9 and its forwardly-extending portion .10 supports the casing 11 of the stove or furnace, which is provided-with a door 12, through which fuel may be supplied to the fire-pot.

Suitably arranged in rear of the casing 12 are pipes 13 14, the upper ends of which connect with the interior of the casing through openings 17 18 in the latter. The upper end of the pipe 13 is closed, and the upper end of the pipe 14, which communicates with the smoke-pipe 15, is provided with a damper 16, which may be adjusted vertically, so as to close the opening 18, or horizontally, so as to out off communication between the pipe 14. and the smoke-pipe 15 and establish communication between the latter and the interior of the casing through the opening 18. The lower ends of the pipes 13 and 14 are connected with opposite ends of the smoke chamber or passage 3, which, it will be seen, ex-.

tends around the sides and the front portion of the base.

The air-chamber 2 in the base is connected by a pipe or duct 19 with the coldest partvof' and by a cold-air pipe or duct with the external air. Saidpipes or ducts, which are provided with valves or dampers to regulate the admission of air through them, are to be 5 of considerable size, the purpose being to enable the air in the apartments which are to be heated to be completely renewed, say every twenty or thirty minutes.

The top plate 7 of the ash-pit is provided to with two concentric series of radial slots or draft-openings 21 and 22 and with a central circular opening 23. The latter is closed by a central circular plate or grate 24, which is arranged to slide upon cleats or flanges 25 I 5 upon the top plate 7. The upper side of the latter supports the concentric, annular, radially-slotted rings 27 and 28, which register with the slots 21 and 22, respectively, and the former of which is provided with grooves en- 20 gaging annular beads26 upon the top plate 7. The said rings 27 and 28 are independently capable of oscillating upon the supportingflanges 26, and may be operated by means of shakers 29, adapted to be inserted through 2 5 slots in the casing 11. The central circular plate 24 may, when desired, be withdrawn upon the supporting-flanges to enable the cinders contained in the fire-potto drop into the ash-pit.

3O designates the fire-basket,which is composed of a series of suitably-connected bars rising from the inner edge of the annular ring 27 ,which is in the nature of a radially-slotted external annular flange of the said fire-basket. 5 It will be seen that a space 31 exists between the latter and the wall of the fire-pot, thus permitting air to circulate freely all around as well as through the fire. The draft may be adjusted and regulated by adjusting the rings 27 and 28, so as to open or partly or entirely close the radial slots or draft-openings 21 and 22 in the top plate of the ash-pit.

32 designates a lid or cover which is supported above the fire-basket in such a posi- 5 tion as to close the upper end of the latter, with the exception of an annular space of an area equal to the exit-opening for the products of combustion, with which the stove or furnace is provided, in order that the draft shall not be retarded. This lid or cover may be described as consisting of a double circular plate comprising an upper and a lower portion 33 34, connected at their outer edges by means of bolts, as shown. The upper portion 33 is provided with a circular dome 36, from which pipes 37 37 extend laterally through the sides of the casing, in which the said lid or cover is thus hinged. One orboth of the pipes 37 are to be provided with counter-weights 38 to balance the weight of the lid or cover,which may thus easily be swung open in order to admit of fuel being supplied to the fire-basket.

One of the pipes 37 is also provided with a forwardly-extending arm 39, engaged by a bell-crank lever 40, the upper end of which has a swiveled arm or hook 40, connected with a bracket 41 upon the inner side of the the purpose of assisting the consumption of the gases, and thereby affording an increase of heat.

The wall of the tire-pot is provided near its upper edge with a belt or annular series of perforations 42, through which air may be admitted to the space between the fire-pot and the fire-basket. The admission of air through these openings may be controlled and regulated by means of a suitable slide or slides 43.

The top plate 9 of the air-chamber 2 is provided with a series of parallel slots or openings 44 44, of oval or rectangular shape, and surrounded by annular upwardly-extending flanges 45. These openings or slotsare connected with similar slots 46 in the top plate 47 of the stove or furnace casing by a series of vertical parallel 'flues 48, which may be constructed either of cast, wrought, or sheet iron, and which are preferably provided with corrugated walls for the double purpose of increasing their strength and affording an increased heating-surface. The back sides of said flues are beveled at their upper ends, and the front sides of these flues are beveled at their upper and lower ends, as shown at 49 50, to enable them to be extended forwardly in the furnace-casing directly over the fire-pot, where they will be subjected most directly and effectively to the action of the fire. The top plate of the furnace-casing is provided with 'a flange 51, surrounding the openings or slots 46, and adapted to be connected by a pipe or hot-air duct with the apartments which are to be heated. If only the room in which the stove or furnace is located is to be. heated, an ornamental perforated cap may be employed to cover the slot ted portion of the top plate.

Suitably hinged near the upper rear edge of the furnace-casing are a series of downwardly depending rods 52, which register with the spaces between the vertical parallel flues 48. 53 is a rock-shaft journaled transversely in the furnace-casing near the lower front corners of said flues. Said rock-shaft is provided with a series of rearwardly-extending arms 54, which are connected by pivoted rods 55 with the rods 52 near the centers of the latter. To the outer ends of the rods 52 are hinged the pendent rods 56. The outer end of the rock-shaft 53 is squared and adapted to be engaged and operated by means of an ordinary wrench or shaker 57. It will be seen that by operating the rock-shaft 53 the several rods 52, 54, 55, and 56 will be caused to swing forwardly in the spaces between the hot-air flues 48, thereby effectuallyclearing the said spaces, by a single rapid operation, of all accumulations of soot and other obstructions, which by this operation are thrown into the fire-pot, from whence they may be readily dumped or-discharged into the ash-pit.

From the foregoing description, taken in connection with the drawings hereto annexed, the operation and advantages of this invention will be readily understood. The airsupply, it will be seen, may be taken either from the external air or from the apartments which are to be heated, or both, and carried through the fines 48, which are located directly in the combustion-chamberof the stove or furnace, where they are subjected to the most intenseheat. The combined heatingsurface of the said fines is relatively very great, and the air in itspassage through will therefore be rapidly heated to a high temperature.

The advantages of the improved construction of the burner, comprising the fire-pot and the fire-basket, with the lid to the latter, are thought to be obvious, and it Will also be readily seen how, when the fire is first started,

direct draft may be had to the smoke-pipe through the opening 18 by adjusting the damper 16 to a horizontal position, While after the fire is started and well under Way the said damper may be raised, thus closing the opening 18 and causing the draft to be through the opening 17, pipe 13, smoke chamber or passage 3, and pipe 14 to the smokepipe 15. The front portion of the base of the stove will thus be converted into a very efficient radiator.

A valve or damper 58, the shaft of which 59 is provided with a counter-balance 60, mounted upon the outer end of its operating arm or crank 61, is to be hung in the airchamber 2 in the base of the stove or furnace to regulate the passage of air through the fines 48.

My improved stove or furnace may be converted into a base-burner by removing the lid or cover of the fire-basket or placing it in a raised position and inserting a magazine of suitable construction, as will be seen in dotted lines in Fig. l of the drawings.

While I have herein described the preferred construction of my invention, I desire it to be distinctly understood that I reserve the right to any modification thereof which may be resorted to without departing from the spirit of the invention.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- 1. The combination of the base having the ash-pit, the top plate covering the latter and having the central opening and concentric series of radial slot-s or draft-openings, the radially-slotted rings arranged to oscillate over the latter, and the central circular plate mounted upon cleats or flanges and arranged to slide in an outward direction, substantially as and for the purpose set forth.

2. The combination of the base having the ash-pit, the top plate covering the latter and having the central opening and concentric series of radial slots or draft-openings, the slotted oscillating rings covering the latter, the sliding center-plate, the fire-pot, and the firebasket mounted upon the inner edge of the outer radially-slotted annular oscillating ring, substantially as and for the purpose setforth. 3. The combination of the base having the ash-pit, the top plate covering the latter and having the concentric series of radial slots or draft-openings, and the oscillating fire-basket provided at its lower edge with an outwardlyextending radially-slotted annular flange, substantially as and for the purpose set forth.

I 4. The combination of the base having the ash-pit, the top plate for the latter, the firepot, the fire-basket, and a hinged lid or cover for the latter, all arranged and operated substantially as set forth.

5. The combination of the fire-pot, the firebasket, the hinged lid adapted to partially cover the latter, and mechanism operated by the furnace-door for raising said lid by opening said door, substantially as and for the purpose set forth.

. 6. The combination of the base, the fire-pot, the fire-basket, the furnace-casing, and the lid having pipes connected therewith and extended through the sides of the furnace-casing to form hinges for the said lid, substantially as and for the purpose set forth.

7. The combination, with the fire-basket, of the lid consisting of the upper andlower circular plates connected at their outer edges, said upper plate being provided with a dome having laterally extending pipes extending through the furnace-casing to form hinges for the lid, substantially as and for the purpose set forth.

8. The combination of the base, the fire-pot, the fire-basket, the furnace-casin g, the lid having pipes extending through the furnacecasing and forming hinges for the lid, and the counterbalance-weights attached to one or both of said pipes outside the furnace-casing, substantially as and for the purpose set forth.

9. The combination of the base, the fire-pot, the fire-basket, the furnace-casing having the fuel-door, the lid having pipes extending through the furnace casing and forming hinges for said lid, an arm extending forwardly from one of said pipes, a bell-crank lever pivoted to the furnace-casing and having a horizontal arm bearing against the under side of said forwardly-extending arm, and a hooked arm or rod swiveled to the upper end of the vertical arm of said bell-crank lever and having its outer hooked end connected with the inside of the fuel-door of the furnace-casing, substantially as and for the purpose set forth.

10. The combination of the base, the firepot, the fire-basket, the furnace-casing having the fuel-door, the lid having pipes extending through the furnace-casing, and mechanism connecting said lid with the fuel-door, whereby when the latter is opened the said lid shall be automatically raised for the ad- IIO mission of fuel, substantially as and for the purpose herein set forth.

11. In an air-heating apparatus, the combination, with aseries of vertically-arranged hot-air fines, which are substantially rectangular in cross-section and arranged parallel to each other, of cleaning mechanism for scraping soot and other obstructions from between said flues, and comprising a series of hinged rods connected with and adapted to be operated simultaneously by a single rockshaft, substantially as and for the purpose set forth.

12. The combination of the furnace-casing, a series of vertically-arranged hot-air flues, arranged parallel to each other, a rock-shaft arranged transversely in rear of the bases of said hot-air flues, arms or rods hinged to the furnace-casing in rear of the upper corners of the said hot-air lines and intermediately between the latter, arms extending rearwardly from the rock-shaft, and pivoted rods connecting the rear ends of said arms with the lower ends of the hinged arms, substantially as and for the purpose herein set forth.

13. The combination, with the furnace-casing, of the vertically-arranged hot-air flues, the hinged arms arranged in rear of and intermediately between the said fines, the rods hinged to the outer free ends of said arms, and mechanism for manipulating the latter simultaneously, substantially as and for the purpose set forth.

14. The combination of the base, the firepot, the furnace-casing, the hot-air flues arranged vertically in the latter in rear of the fire-pot, the rock-shaft arranged transversely in the furnace-casing in rear of the lower ends of the hot-air fines, the arms hinged in the furnace-casing in rear of the upper corners of and intermediately between the hotair flues, the arms extending rearwardly from the rock-shaft, the pivoted rods connecting said arms with the hinged arms, and the rods hinged to the free ends of the latter, whereby byasingle manipulation of the rockshaft the soot and other obstructions shall be thrown from between the hot-air flues forwardly into the fire-pot, substantially as and for the purpose herein set forth. a

- In testimony that I claim the foregoing as my own I have hereto aflixed my signature in presence of two witnesses.

JOHN A. KIRKPATRICK. Witnesses:

E. C. WILcoX, F. C. RANEY. 

